Update rspec requirement from ~> 3.10.0 to ~> 3.11.0

Updates the requirements on [rspec](https://github.com/rspec/rspec-metagem) to permit the latest version.
- [Release notes](https://github.com/rspec/rspec-metagem/releases)
- [Commits](rspec/rspec-metagem@v3.10.0...v3.11.0)

---
updated-dependencies:
- dependency-name: rspec
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Gemfile

@@ -12,7 +12,7 @@ group :test do
   gem 'simplecov-lcov', '~> 0.8.0'
   gem 'pry'
   gem 'rb-readline'
-  gem 'rspec', '~> 3.10.0'
+  gem 'rspec', '~> 3.11.0'
   gem 'rubocop', '~> 1.6'
   gem 'webmock', '~> 3.13'
 end